Home / 990,806.22-1,367,396.91-561,162.78

Finding the Fourth Proportional to 990,806.22, 1,367,396.91 and 561,162.78

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Solution

The fourth proportional to 990,806.22, 1,367,396.91 and 561,162.78 is: 774,452.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,806.22 : 1,367,396.91 = 561,162.78 : x
  2. Step 2: Convert to fraction form
    990,806.22/1,367,396.91 = 561,162.78/x
  3. Step 3: Cross multiply
    990,806.22x = 1,367,396.91 × 561,162.78
  4. Step 4: Simplify right side
    990,806.22x = 767,332,251,379.01
  5. Step 5: Solve for x
    x = 767,332,251,379.01/990,806.22
  6. Step 6: Final answer
    x = 774,452.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.